Which of these conditions usually occurs in preterm infants and requires immediate administration of surfactant through an endotracheal tube at the time of birth?

Choice A rationale Cystic fibrosis is an autosomal recessive genetic disorder caused by a mutation in the CFTR gene, affecting chloride transport and leading to production of abnormally thick mucus, primarily impacting the respiratory and digestive systems. It is a chronic condition and not an acute condition occurring immediately at birth requiring immediate surfactant administration through an endotracheal tube. Choice B rationale Bronchopulmonary dysplasia (BPD), sometimes referred to as chronic lung disease, is a long-term respiratory complication, mainly affecting premature infants who required prolonged mechanical ventilation and oxygen. It is characterized by abnormal lung development and fibrosis. While it is linked to prematurity, it is a chronic sequel, not the immediate neonatal condition that necessitates the initial surfactant intervention. Choice C rationale A pneumothorax is the presence of air in the pleural space, which collapses the lung and leads to acute respiratory distress. While it can occur in preterm infants, especially those on mechanical ventilation, it is a mechanical complication requiring a chest tube for air aspiration, not a condition caused by primary surfactant deficiency that is treated with exogenous surfactant administration. Choice D rationale Respiratory Distress Syndrome (RDS), historically called Hyaline Membrane Disease, is the leading cause of morbidity in premature infants. It results from a developmental deficiency of pulmonary surfactant, a lipoprotein that lowers alveolar surface tension. This deficiency causes widespread alveolar collapse (atelectasis) and decreased lung compliance, necessitating immediate exogenous surfactant replacement via the endotracheal tube to improve lung function.